220-802 Question #819: Real Exam Question with Answer & Explanation

The correct answer is D: Multimeter. A multimeter is an electronic measuring instrument that can measure multiple electrical properties, including DC/AC voltage, current (amperage), and resistance (ohms). When used to test a power supply, a technician probes the power supply connectors to read the actual voltage on

Question

A technician is using a test tool that is displaying the current voltage output of a power supply on the tool. Which of the following tools is the technician using?

Options

ALoopback plug
BCable tester
CPOST card
DMultimeter

Explanation

A multimeter is an electronic measuring instrument that can measure multiple electrical properties, including DC/AC voltage, current (amperage), and resistance (ohms). When used to test a power supply, a technician probes the power supply connectors to read the actual voltage on each rail (e.g., +12V, +5V, +3.3V) and compare them to expected values. A loopback plug (A) tests network or serial port signaling. A cable tester (B) checks network cable continuity and wiring. A POST card (C) is inserted into a motherboard slot to display diagnostic codes during the Power-On Self-Test. None of those display live voltage readings.

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